@article { DamkovaLSA18,
	title = {Enhancement of the {\textquoteleft}tractor-beam{\textquoteright} pulling force on an optically bound structure},
	journal = {Light: Sci. Appl.},
	volume = {7},
	year = {2018},
	pages = {17135},
	doi = {10.1038/lsa.2017.135}
}
